含寄生网络的激光器小信号调制响应模拟新方法

在高速通信中应准确分析激光器高频调制响应需要计及寄生网络的影响。推导了激光器测试系统散射参数与本征响应传输函数之间的关系，提出用激光器散射参数扣除求取激光器本征响应和模拟激光器整体小信号调制响应的新方法。结合激光器的等效电路和速率方程分析，避免了单独测量寄生网络和估计有源区电路参数。对法布里-珀罗型激光器样品测试发现，仿真与实验的结果吻合。这一模拟方法简便快捷，准确性好。

New Simulation Method for Small-Signal Modulation Response of Laser with Parasitic Network

In order to accurately analyze the high frequency modulation response of laser diode (LD) in high speed communication, it is necessary to take the effect of the parasitic network into account. In this paper, the relation between the scattering parameters of laser measurement system and the transfer function of intrinsic response is deduced. By combining the rate equation with its equivalent circuit model, a new method for extracting the intrinsic response of laser and simulating the modulation response of the overall laser diode is proposed. The advantage of this method lies in that there is no need to measure the parasitic network separately and estimate the circuit parameters of active region. The results of measuring Fabry-Perot (F-P) laser sample are in good agreement with the simulation, which indicates that the method is simple and accurate.